Microwave runs but does not heat food; turntable rotates and light is on, but food remains cold.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Critical safety warning: The high-voltage section of a microwave is extremely dangerous. Do not remove the outer cabinet or attempt internal repairs unless you are a trained technician with proper tools and procedures.
User-level checks:
- 1. Confirm symptom: Heat a cup of water on HIGH for 1–2 minutes. If there is no noticeable temperature increase, heating has failed.
- 2. Check power level setting: Ensure the power level is set to 100% (HIGH) and not a low power or defrost setting.
- 3. Try different cookware: Use a known microwave-safe glass or ceramic container. Avoid metal-trimmed dishes or containers with metallic paint.
- 4. Power reset: Unplug for 10 minutes, then plug back in and test again.
If the microwave still runs without heating, discontinue use and contact a qualified technician or Breville service center. Internal components such as the magnetron, high-voltage diode, capacitor, or transformer/inverter will need professional diagnosis and replacement.